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Grandpa warp sync request-response protocol (#7711)

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* Made a start

* So the proof between authority set is phragmen one, this is crazy big,
or is there some signing of the result : that is the storage key, damn?

* ok getting from header digest seems doable.

* for testing

* get set id from storage directly (should use runtime to handler change).

* move test to init

* correct auth key

* fix iteration

* Correct proof content

* actually update block number.

* actually check last justif against its header

* justification relation to new authorities through header hash check is
needed here. This assumes the hash from header is calculated.

* Few changes

* Connected up cheme's branch

* Clean up

* Move things around a bit so that adding the grandpa warp sync request response protocol happens in the node code

* Nits

* Changes to comments

* Cheme changes

* Remove todos and test compile.

* Rename _authority_ related proof function to _warp_sync_ .

* Update client/grandpa-warp-sync/src/lib.rs

quick fix

* Put the warp sync request response protocol behind a feature flag because we dont' need it on a light client.

* Update client/grandpa-warp-sync/src/lib.rs

Quick fix

* Update Cargo.lock

* Adding test, comment on limitation related to 'delay', this could
be implemented but with a cost.

* Set between a delay override last fragment.

* Check for pending authority set change at start.

* adjust index

* custom cache is not a good idea.

* Use a simple cache instead.

* restore broken indentation

* Address crate rename

* Merge conflict badly resolved, sorry

Co-authored-by: cheme <emericchevalier.pro@gmail.com>
Co-authored-by: Pierre Krieger <pierre.krieger1708@gmail.com>
This commit is contained in:
Ashley
2021-01-21 18:14:07 +01:00
committed by GitHub
parent cd0ad4805d
commit 87cc216774
12 changed files with 770 additions and 33 deletions
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substrate/client/finality-grandpa/src/import.rs
+2 -2
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@@ -182,7 +182,7 @@ impl<'a, Block: 'a + BlockT> Drop for PendingSetChanges<'a, Block> {
}
}
fn find_scheduled_change<B: BlockT>(header: &B::Header)
pub(crate) fn find_scheduled_change<B: BlockT>(header: &B::Header)
-> Option<ScheduledChange<NumberFor<B>>>
{
let id = OpaqueDigestItemId::Consensus(&GRANDPA_ENGINE_ID);
@@ -197,7 +197,7 @@ fn find_scheduled_change<B: BlockT>(header: &B::Header)
header.digest().convert_first(|l| l.try_to(id).and_then(filter_log))
}
fn find_forced_change<B: BlockT>(header: &B::Header)
pub(crate) fn find_forced_change<B: BlockT>(header: &B::Header)
-> Option<(NumberFor<B>, ScheduledChange<NumberFor<B>>)>
{
let id = OpaqueDigestItemId::Consensus(&GRANDPA_ENGINE_ID);